by David Harbord and Nils-Henrik von der Fehr, 24 July 2016. Posted byDavid Harbord July 25, 2016 0 Share: Comment on Ghang and Nowak’s “Indirect reciprocity with optional interactions”&body=https://www.market-analysis.co.uk/comment-on-ghang-and-nowak-indirect-reciprocity-with-optional-interactions-2/" title="Share by Email"> Related Articles “Market Definition in Oligopolistic and Vertically-Related Markets: Some Anomalies” On the Enforcement of Trade Embargoes by the Merchant Guilds CREG Energy Market Panel: The Evolution of Electricity Market Regulation in Colombia “Network-Based Price Discrimination and Bill and Keep vs. Cost-Based Regulation of Mobile Termination Rates” CREG Energy Market Panel: The Evolution of Electricity Market Regulation in Colombia A comment on Ghang and Nowak’s “Indirect reciprocity with optional interactions”